If your idea of a great vacation means being by the water, visit Isla Silva de Tierra. No matter what you choose to do here, you're unlikely to tire of those pretty views.
You'll have to make your way to Chiriquí Province to reach this water-surrounded land mass. If you intend to do some sightseeing later on, why not check out Isla Silva de Afuera? It's located near Isla Silva de Tierra.